PMID- 34069233 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231111 IS - 1999-4923 (Print) IS - 1999-4923 (Electronic) IS - 1999-4923 (Linking) VI - 13 IP - 5 DP - 2021 May 14 TI - Recent Advances in pH- or/and Photo-Responsive Nanovehicles. LID - 10.3390/pharmaceutics13050725 [doi] LID - 725 AB - The combination of nanotechnology and chemotherapy has resulted in more effective drug design via the development of nanomaterial-based drug delivery systems (DDSs) for tumor targeting. Stimulus-responsive DDSs in response to internal or external signals can offer precisely controlled delivery of preloaded therapeutics. Among the various DDSs, the photo-triggered system improves the efficacy and safety of treatment through spatiotemporal manipulation of light. Additionally, pH-induced delivery is one of the most widely studied strategies for targeting the acidic micro-environment of solid tumors. Accordingly, in this review, we discuss representative strategies for designing DDSs using light as an exogenous signal or pH as an endogenous trigger. FAU - Shin, Yuseon AU - Shin Y AD - Department of Global Innovative Drugs, The Graduate School of Chung-Ang University and College of Pharmacy, Chung-Ang University, 221 Heukseok-dong, Seoul 06974, Korea. FAU - Husni, Patihul AU - Husni P AUID- ORCID: 0000-0001-8448-0491 AD - Department of Global Innovative Drugs, The Graduate School of Chung-Ang University and College of Pharmacy, Chung-Ang University, 221 Heukseok-dong, Seoul 06974, Korea. FAU - Kang, Kioh AU - Kang K AD - Department of Global Innovative Drugs, The Graduate School of Chung-Ang University and College of Pharmacy, Chung-Ang University, 221 Heukseok-dong, Seoul 06974, Korea. FAU - Lee, Dayoon AU - Lee D AD - Department of Global Innovative Drugs, The Graduate School of Chung-Ang University and College of Pharmacy, Chung-Ang University, 221 Heukseok-dong, Seoul 06974, Korea. FAU - Lee, Sehwa AU - Lee S AD - Department of Global Innovative Drugs, The Graduate School of Chung-Ang University and College of Pharmacy, Chung-Ang University, 221 Heukseok-dong, Seoul 06974, Korea. FAU - Lee, Eunseong AU - Lee E AUID- ORCID: 0000-0002-4087-2407 AD - Division of Biotechnology, The Catholic University of Korea, Bucheon 14662, Korea. FAU - Youn, Yuseok AU - Youn Y AD - School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea. FAU - Oh, Kyungtaek AU - Oh K AD - Department of Global Innovative Drugs, The Graduate School of Chung-Ang University and College of Pharmacy, Chung-Ang University, 221 Heukseok-dong, Seoul 06974, Korea. LA - eng GR - 2015R1A5A1008958/Ministry of Science and ICT, South Korea/ GR - 2021R1A2C2008519/Ministry of Science and ICT, South Korea/ PT - Journal Article PT - Review DEP - 20210514 PL - Switzerland TA - Pharmaceutics JT - Pharmaceutics JID - 101534003 PMC - PMC8157172 OTO - NOTNLM OT - acid-labile bond OT - chemotherapy OT - light OT - nanovehicles OT - pH OT - photodynamic OT - photothermal OT - protonation OT - stimuli COIS- The authors declare no conflict of interest. EDAT- 2021/06/03 06:00 MHDA- 2021/06/03 06:01 PMCR- 2021/05/14 CRDT- 2021/06/02 01:25 PHST- 2021/04/26 00:00 [received] PHST- 2021/05/11 00:00 [revised] PHST- 2021/05/11 00:00 [accepted] PHST- 2021/06/02 01:25 [entrez] PHST- 2021/06/03 06:00 [pubmed] PHST- 2021/06/03 06:01 [medline] PHST- 2021/05/14 00:00 [pmc-release] AID - pharmaceutics13050725 [pii] AID - pharmaceutics-13-00725 [pii] AID - 10.3390/pharmaceutics13050725 [doi] PST - epublish SO - Pharmaceutics. 2021 May 14;13(5):725. doi: 10.3390/pharmaceutics13050725.